package com.flyu.myThread.PandC;


// 生产者和消费者模型---信号灯法，标志位解决
public class TestPC2 {
    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();

    }
}

// 生产者==演员
class Player extends Thread{
    TV tv = new TV();
    public Player(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if (i % 2 == 0){
                this.tv.play("快乐大本营");
            }else {
                this.tv.play("天天向上");
            }
        }
    }
}

// 消费者==观众
class Watcher extends Thread{
    TV tv = new TV();
    public Watcher(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.wathc();
        }
    }
}

// 产品==节目
class TV{
    // 节目名
    String voice;
    // 信号：
    // 演员表演，观众等待 == T
    // 观众观看，演员等待 == F
    boolean flag = true;

    // 表演
    public synchronized void play(String voice){
        if (!flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("演员表演了："+voice);
        // 通知观众
        this.notifyAll();
        this.voice = voice;
        this.flag = !this.flag;
    }

    // 观看
    public synchronized void wathc(){
        if (flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观众观看了："+this.voice);
        // 通知演员
        this.notifyAll();
        this.flag = !this.flag;
    }

}